Sequence numbers on messages sent by producers coupled with some sort of persist... | Hacker News

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SnorkelTan on Oct 9, 2012 | parent | context | favorite | on: NSQ: Realtime distributed message processing at sc...

Sequence numbers on messages sent by producers coupled with some sort of persistence by the sender. This way when a gap is detected some sort of resend protocol can be implemented to achieve the delivery guarantee.

jlgreco on Oct 9, 2012 [–]

So the sender just keeps trying until it gets an ACK. Fair enough, though I imagine you'd want to run multiple nodes even with this.

SnorkelTan on Oct 9, 2012 | [–]

Correct. Reliability and Availability are two separate but related goals.

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